| Abstract: | Nowadays, SLA (Second Language Acquisition) is a hot topic and is attached great importance at both home and abroad. Input and interaction are taken as two very important factors have great impact On the leamers'L2 acquisition level and quality. The former research on the above two factors is productive and a lot of research on the importance of input and interaction in SLA is being conducted. Krashen's Input Hypothesis and Long's Interaction Hypothesis are the two most influential ones. This thesis first gives a general introduction of the two hypothesis, then a detailed explanation of their importance in SLA is presented, finally a conclusion is drawn. |
